Toshiba Satellite - Locks up when plugged in

[rievax_60]

Re: Toshiba Satellite - Locks up when plugged in

All right sounds intresting.

Any ideas how to do it? +125°C for 1-1.5h

Quote from Wikipedia:
Soft solder is what is most often thought of when solder or soldering is mentioned and it typically has a melting range of 90 to 450 °C (190 to 840 °F).[citation needed] It is commonly used in electronics and plumbing. Alloys that melt between 180 and 190 °C (360 and 370 °F) are the most commonly used. Soldering performed using alloys with melting point above 450 °C (840 °F) is called 'hard soldering', 'silver soldering' or brazing

If I am about to try this how to do it? Hot air pistol?

Like I said before. "its a long shot"
Its best for it to be a temperature controlled hot air gun. I would try 150C.
Can you test for ripple on the Vcore rail?

[dromango]

Re: Toshiba Satellite - Locks up when plugged in

Is it ok to turn on the laptop without the nec token? Im about to replace the bad cap for Toshiba Satellite L305-S5894.

[rievax_60]

Re: Toshiba Satellite - Locks up when plugged in

Is it ok to turn on the laptop without the nec token? Im about to replace the bad cap for Toshiba Satellite L305-S5894.

I can not predict what will happen. It is best to not do it.

[johnwafu]

Re: Toshiba Satellite - Locks up when plugged in

Ive tried it once without nectokin

no display only and auto shutdown XD

[dromango]

Re: Toshiba Satellite - Locks up when plugged in

I ask because, even when you guys install caps, some of you say the problem is not fixed. so I am just getting a clear idea here. well, I know its never too good to turn on something without its pieces...

[Newtonkh]

Re: Toshiba Satellite - Locks up when plugged in

what i have done so far is to remove the SuperCap ( NECTOKIN) and Solder 4 330uF Tantalum Caps to where the NECTOKIN was. U will need to carefully scratch the UV coat.

i have done more then 30 laptops with the NECTOKIN in the last 6 months and all worked well.

[johnwafu]

Re: Toshiba Satellite - Locks up when plugged in

a have a problem with my client toshiba blackout with intermittent power.

Ive already replaced 4 330uf same problem

2 330uf same problem

2 220uf same problem

2 220 and 2 330 same problem

check the lan because it was blinking upon pressing the power button

remove the controller ic of the lan

but still same problem after I on the unit shutoff no display or what

ive noticed that the proc is not heating up

tried new proc same problem

any ideas sir/mam?

ive also noticed that the nothbridge was over reheated by other tech that handled this first

pls help me on this

[al5911]

Re: Toshiba Satellite - Locks up when plugged in

My friend have Satellite L200 that cannot boot. No post. Battery already depleted. When I plug in the power, the charging led and wireless led will automatically light up. When I pressed power button/switch, it charging led,wireless led,power led and hdd led will light up for 4-6 sec then after that only the charging led and wireless led remain light on. I already changed the NEC/TOKIN OE128. What could be the problems? I'm thinking there is shorting else where but I don't know how to look/find for it. Any help gentleman??

[trebo]

Re: Toshiba Satellite - Locks up when plugged in

what i have done so far is to remove the SuperCap ( NECTOKIN) and Solder 4 330uF Tantalum Caps to where the NECTOKIN was. U will need to carefully scratch the UV coat.

i have done more then 30 laptops with the NECTOKIN in the last 6 months and all worked well.

Hi Newtonkh
Can you tell us what the Esr was, on your suggested Tantalum Caps
Thxs

[davida999]

Re: Toshiba Satellite - Locks up when plugged in

i have a laptop samsung with a NEC TOKIN OE687

can anyone suggest replace cap values. i have looked for spec sheet but could not find it

[davida999]

Re: Toshiba Satellite - Locks up when plugged in

i have a laptop samsung with a NEC TOKIN OE687

can anyone suggest replace cap values. i have looked for spec sheet but could not find it

i have found the following which may help



where for Capacitance e.g. 128=1200uF
First two digits represent significant figures.
Third digit specifies number of zeros to follow.

[Notsosure]

Re: Toshiba Satellite - Locks up when plugged in

i have a laptop samsung with a NEC TOKIN OE687

can anyone suggest replace cap values. i have looked for spec sheet but could not find it

Apparently there is not much info available about OE687 on the Internet.

OE687 refers to a capacitance of 68 followed by 7 zeros in picofarads (i.e., 680000000pF), which is 680uF (microfarads). These Proadlizers usually have ESR of between 1 to 2mΩ. Therefore, you should consider replacing it with four caps of the type T520V227M004ATE006 or similar.

[davida999]

Re: Toshiba Satellite - Locks up when plugged in

Apparently there is not much info available about OE687 on the Internet.

OE687 refers to a capacitance of 68 followed by 7 zeros in Pico Faraday (i.e., 680000000pF), which is 680uF. These Proadlizers usually have ESR of between 1 to 2mΩ. Therefore, you should consider replacing it with four caps of the type T520V227M004ATE006 or similar.

thanks Notsosure

i did find this datasheet on the oe687 (PSGD0E687M7)
http://www.datasheetarchive.com/PSGD...datasheet.html

the mouser item T520V227M004ATE006 seems to have a min buy of 320 units on a roll.

could i sub the RS 470's and exceed the uF rating by nearly double or use multiple 100uF caps?

i'm in bris australia

[Notsosure]

Re: Toshiba Satellite - Locks up when plugged in

could i sub the RS 470's and exceed the uF rating by nearly double or use multiple 100uF caps?

The datasheet appears to be for small caps and I thought you have a large cap (i.e., Proadlizer) in your laptop?

If you do not want to experiment much then 7 or 8 of 100uF ceramic caps might be the easiest way to go. If you do not mind experimenting then you could try 2 or 3 of RS Stock No. 737-2832 or similar. 3 will give a total of 1410uF which is around twice the present capacitance.

[Notsosure]

Re: Toshiba Satellite - Locks up when plugged in

Being in Australia, RS might be a reasonably priced source because of free shipping.

[davida999]

Re: Toshiba Satellite - Locks up when plugged in

The datasheet appears to be for small caps and I thought you have a large cap (i.e., Proadlizer) in your laptop?

If you do not want to experiment much then 7 or 8 of 100uF ceramic caps might be the easiest way to go. If you do not mind experimenting then you could try 2 or 3 of RS Stock No. 737-2832 or similar. 3 will give a total of 1410uF which is around twice the present capacitance.

thanks Notsosure, sorry about the datasheet, i'm not into board level stuff. it is a proadilizer. with the 100uf ceramics how is the ESR calculated or doesn't it relate to them?

[Notsosure]

Re: Toshiba Satellite - Locks up when plugged in

with the 100uf ceramics how is the ESR calculated or doesn't it relate to them?

Their ESR is probably 1mΩ so it is not a concern at all but their temp limit appears to be 85C, which too is usually not a problem unless laptop runs very hot for some reason:
http://translate.google.com.au/trans...ed=0CG8Q7gEwBg

[davida999]

Re: Toshiba Satellite - Locks up when plugged in

Their ESR is probably 1mΩ so it is not a concern at all but their temp limit appears to be 85C, which too is usually not a problem unless laptop runs very hot for some reason:
http://translate.google.com.au/trans...ed=0CG8Q7gEwBg

thanks again Notsosure. i'm going to try the tantalums because they are easy to get`from RS. its pretty hard to source any of the other options.

i really appreciate you taking the time to post advice here and in the many other posts i've seen here and elsewhere.

[Notsosure]

Re: Toshiba Satellite - Locks up when plugged in

i'm going to try the tantalums because they are easy to get`from RS.

You can actually get 10 of GRM31CR60J107ME39L from RS for $17 delivered, if you wish to. Of course, if you are willing to experiment with other caps then any inputs from you might help others. The choice is yours.

[davida999]

Re: Toshiba Satellite - Locks up when plugged in

You can actually get 10 of GRM31CR60J107ME39L from RS for $17 delivered, if you wish to. Of course, if you are willing to experiment with other caps then any inputs from you might help others. The choice is yours.

thanks Notsosure, i didn't think of searching by the part #. i will order them today.